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tips, technology, tools and techniques related to vehicle driveline components

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mstemp
Mike Stemp
Calgary, Canada
(193 posts)

Registered:
11/25/2009 07:18AM

Main British Car:
1980 MGB Rover 4.6L

Trigger Wheel Mounting
Posted by: mstemp
Date: March 07, 2019 03:30PM

Finally at the point that I would like to move to crank triggered ignition on my Rover 4.6L. It is using a Buick 215 damper and front cover so none of the simple UK sourced kits look to work for the trigger wheel and pick up. While I have seen what Curtis did on his MS3 Pro setup, would rather not have to space out the alternator and water pump. So my question is, would attaching the wheel to the front side of the damper on the outer most circle effect the balance of the motor? Seeing at this outer ring is attached via the rubber to the center section there would be some obvious play but would this be significant to effect the timing and would it hurt the motors balance?
HarmonicBalancer-1.JPG
HarmonicBalancer-2.JPG


BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(5720 posts)

Registered:
10/23/2007 12:59PM

Main British Car:
1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS

authors avatar
Re: Trigger Wheel Mounting
Posted by: BlownMGB-V8
Date: March 07, 2019 06:37PM

Should be OK. Another option is to drill holes in the pulley to create a tooth pattern if your pulley is dished.

Jim


MG four six eight
Bill Jacobson
Wa state
(290 posts)

Registered:
10/23/2007 02:15AM

Main British Car:
73 MGB Buick 215, Eaton/GM supercharger

Re: Trigger Wheel Mounting
Posted by: MG four six eight
Date: March 08, 2019 02:22AM

I have mine mounted to the back side of the outer ring. Works well, if I remember correctly I had to machine the overall diameter of the trigger wheel by .125" to clear the timing indicator on the cover.
There is a couple of pics in my build write up here [www.britishv8.org]
Bill



Edited 1 time(s). Last edit at 03/08/2019 02:22AM by MG four six eight.


mstemp
Mike Stemp
Calgary, Canada
(193 posts)

Registered:
11/25/2009 07:18AM

Main British Car:
1980 MGB Rover 4.6L

Re: Trigger Wheel Mounting
Posted by: mstemp
Date: March 08, 2019 07:42AM

Thanks Jim and Bill.


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